Does poor customer service piss you off?

Literally does it make you angry?

Or, do you just accept it? Hell, expect it.

Do you do anything about it when it happens? Tell the person directly they failed to meet expectations? Tell their boss? Do you follow up your complaint with how you expected things should be done?

Are you complaining? Or, just trying to give them feedback, information, so they can be better? What is your intent when you tell them you are dissappointed?